v3.10.0.1
Intangible Assets - Estimated Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
2019 $ 13,296  
2020 9,508  
2021 3,053  
2022 215  
Net book value $ 26,072 $ 17,210